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首页> 外文期刊>International Journal of Heat and Mass Transfer >Polydisperse aerosol condensation with heat and mass conservation Ⅱ: Fluid dynamic couplings for an embedded aerosol zone
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Polydisperse aerosol condensation with heat and mass conservation Ⅱ: Fluid dynamic couplings for an embedded aerosol zone

机译：节约热量和质量的多分散气溶胶冷凝Ⅱ：嵌入式气溶胶区的流体动力耦合

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摘要

Aerosol condensational growth in a fluid field, including water vapor depletion and latent heat of condensation, is studied by a newly developed model coupling aerosol condensation with fluid dynamics. This model couples the fluid dynamics (via ANSYS FLUENT) and a time-dependent model [1] developed for nonsteady state, nonisothermal conditions. Mass and heat are effectively conserved throughout the computational domain with changes driven by aerosol condensation and evaporation. In turn, these changes promote fluid movement and its evolution. Communications between the air parcel, inside which the aerosol particles are introduced, and the outside environment are allowed by means of mass and heat transfer. Comparison between results of models with and without computational fluid dynamics (CFD) shows that the fluid movement due to aerosol condensation can have significant impact on the aerosol growth. By comparing the growth of both monodisperse and polydisperse (NH_4)2SO_4 particles of different number densities at various initial supersaturation conditions, particle number concentrations are shown to have great impact on the aerosol condensational growth with mass and heat exchange between the inside and outside of the air parcel.
机译：通过新开发的将气溶胶凝结与流体动力学耦合的模型，研究了流体场中的气溶胶凝结生长，包括水蒸气耗竭和凝结潜热。该模型将流体动力学（通过ANSYS FLUENT）与针对非稳态，非等温条件开发的随时间变化的模型[1]耦合在一起。在整个计算域中，通过气溶胶凝结和蒸发驱动的变化有效地保留了质量和热量。反过来，这些变化促进了流体运动及其演化。通过质量和热传递，允许在其中引入了气溶胶颗粒的空气包裹与外部环境之间的连通。具有和不具有计算流体动力学（CFD）的模型结果之间的比较表明，由于气溶胶凝结而引起的流体运动会对气溶胶的生长产生重大影响。通过比较不同初始密度条件下不同数量密度的单分散（NH_4）2SO_4和多分散（NH_4）2SO_4颗粒的生长，表明颗粒数浓度对气溶胶凝结的生长有很大的影响，同时在内部和外部之间进行质量和热交换。空运包裹。

著录项

  • 来源
    《International Journal of Heat and Mass Transfer》 |2012年第26期|p.7570-7576|共7页
  • 作者

    Jun Geng; Chu Nie; William H. Marlow;

  • 作者单位

    Department of Nuclear Engineering, Texas A&M University, College Station, TX 77843, USA,Department of Physics and Applied Physics, University of Massachusetts Lowell, Lowell, MA 01854, USA;

    School of Power and Mechanical Engineering, Wuhan University, Wuhan, Hubei 430072, People's Republic of China;

    Department of Nuclear Engineering, Texas A&M University, College Station, TX 77843, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    condensation; nonsteady; nonisothermal; computation fluid dynamics;

    机译：缩合;不稳定非等温计算流体动力学;

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